Radiator



April 5, 1932. A R KUHN 1,852,168

RADIATOR Filed March 25, 1930 2 Sheets-Sheet 1 TE i4 bile M4 A @M A. R.KUHN April 5, 1932.

RADIATOR Filed March 25. 1950 2 Sheets-Sheet rlllllllillrllllllkl A IIIavwewtoz AL F/FED 1Q. ffi/hw.

Patented Apr. 5, 1932 UNITED STATES PATENT OFFICE ALFRED R. KUHN, OFQUEENS VILLAGE, NEW YORK, ASSIGNOR T METROPOLITAN ENGINEERING COMPANY, ACORPORATION OF NEW YORK RADIATOR Application filed March 25, 1930.Serial No. 438,672.

The invention provides a radiator in which certain sheet metal parts areapplied in a new way which facilitates the manufacture of the radiatorand effects certain improve- F ments in the finished structure.

Fig. 1 is a front elevation and Fig. 2 a plan of a radiator;

Fig. 3 is a perspective at one end of the upper portion of the same;

Fig. 4 is a perspective of the sheet metal structure;

Fig. 5 is a perspective of a certain clip or fastening ring with one endin section;

Figs. 6 and Z are vertical transverse sections showing the ring indifferent positions.

Fig. 1 illustrates a radiator of the Murray type, the heating elementbeing a tube 11 extending back and forth in several sections, and anextended area of sheet metal being applied to the opposite sides formingvertical passages for heating and inducing a draft of air.

The apparatus may be usedalso for coolin the air by circulating brinethrough the tu and may be used for various other purposes and withvarious other sorts of heating element, (such as an electrical stripheater, for example). H

The present invention is directed chiefly to the securing of the sheetmetal to the heatingrelcment.

he extended area is provided by sheets, preferably of copper, corrugatedto form lateral fins 12 connected in' pairs at their outer edges bylongitudinal portions 13 and alternately at their inner edges bylongitudinal portions 14, the latter being bent out at intervals intorecessed portions 15, Fig. 4, embracing the pipe 11. Two such sheets areassembled. at opposite sides of the pipe as shown and are then fastenedtogether. They may be at once clamped so tightly as to provide thedesired good heat conducting joint of large area between the pipe andthe sheets. Or the connection herein described may be supplemented bydipping the radiator in solder, tin or other metal, or supplementalmechanical-means may be used for holding the parts together.

The longitudinal plates 14 are punched with holes 16 immediately aboveand below the recessed portions 15. At each joint a ring 17, preferablyof steel or similar stiff metal, is passed through the openings 16 aboveand below the pipe and has its end flanges 18 and 19 fastened together.

The ring is preferably of heavier metal than the sheet and has such ashape that when its ends are united it presses the recessed portions ofthe sheets closely against the pipe 11 and around practically the entirecircumference of the pipe.

The ends of the ring may be punched to form welding projections 20 (Fig.5) on their meeting faces so that when pressed together during thepassage of a welding current, the heat will be concentrated in theseprojections and a good weld will be secured. The ends may be welded inother ways, or they may be fastened by rivets or screws orby crimping,or in other mechanical ways.

The location of the ends of the clip may be varied, as may be mostconvenient in view of the shape of the sheet metal and otherconsiderations. Instead of the corrugated sheets, a great variety ofother shapes may be utilized in connection with the approved fasteningmeans.

M Fig. 3 shows the ends in horizontal line with the centre of the pipe.

Fig. 6 shows them in vertical line, and Fig. 7 shows them arrangedobliquely.

Fig. 3 shows the sheet metal applied in a different form from that ofthe other figures, instead of a continuous sheet for the full length ofthe radiator, a number of successive units are arranged along the tube,each comprising an inner plate 14 from the edges of which are twolateral fins 12 extending outward with flanges 20 on their outer edges;which are substantially like the outer longitudinal plates 13 of Fig. 2except for the space between them. By using units of this shape they maybe spaced as far apart or as close together as desired.

Various other modifications may be made by those skilled in the artwithout departing from the invention as defined in the following claims.

I claim:

1 A radiator including in combination a heating element, an extendedarea structure in two parts applied respectively to opposite sides ofthe heating element and means for fastening said parts in placecomprising a clip passing around the portions thereof which are incontact with the heating element and having its ends united.

2. A radiator including in combination a heating element, an extendedarea structure in two parts applied respectively to opposite sides ofthe heating element and comprising sheet metal with portions recessed toembrace the heating element and means for fastening said parts in placecomprising a clip fitting against the recessed portion of the sheetmetal and passing around the element and having its ends united.

3. A radiator including in combination a heating element, an extendedarea structure applied thereto consisting of a corrugated sheet havinglongitudinally extending portions which are recessed to embrace theheating element, having openings immediately beyond such recessedportions and means for fastening the parts together comprising a clipextending around the heating element passing through said openings andhaving its ends united.

' 4. A radiator including in combination a heating element, an extendedarea structure applied thereto having a portion engaging the heatingelement and another portion extending outward therefrom and means forfastening said structure in place comprising a clip passing around onlythe portion which is in contact with the heating element and having itsordinarily free ends united to hold the parts in close contact.

5. The radiator of claim 4, the extended area structure beingcomparatively soft and being recessed to embrace the heating element andthe clip bein comparatively. still 45 so, as to hold the parts rmly inshape.

In witness whereof, I have hereunto signed my name.

ALFRED R. KUHN.

